To remove or reinstall the torsion bars on the GMC front wheel drive
motor home a tool is required to pre-load the torsion bar prior to removal
or installation of the retaining bolt.

If not done properly this procedure could cause damage to parts or people.
The following is a tool that I have used successfully for this work. The
OTC 927 is a commonly available puller. The rest of the parts are easily
made from common materials.

On the GMC Motor home the torsion bar adjusting bolts must only be used
hold the torsion bar in adjustment. Adjusting the bolt should not be attempted
without first removing the pressure from the torsion bar.

If I built this tool again I would probably use 11/16" threaded rod
even though more grinding would be required for clearance on the OTC 927.
The lateral loads bend the threaded rods. I would also probably make the
threaded rods and the support tubes 1" or 1 ½" shorter to reduce
the lateral loads.

Click on photo to see with higher resolution.

The above photos show the tool:

- installed

- assembled

- disassembled

To remove the pressure the arm, rear of torsion bar, contained within
the cross member is raised. A reveal has been provided in this arm for
this purpose. Significant tension is required to raise this arm.

This puller is based on an OTC 927 puller with the addition of 2 - 5/8"
X 11 1/2" threaded rods and the 8 1/2" long cross tube made earlier for
the GMC Motorhome spindle puller.

You must evaluate the information presented for you and for your circumstances.
If you are without the experience or skills or if the enclosed is not suitable
for your use then please do not use. While this assembly has worked well
for me I can take no responsibility for your use of this information.